Mechanical movement.



WJTNESSES:

E. A. DEWALD & A. ROSBNSON.

MECHANICAL MOVEMENT.

APPLICATION rILED JUNI: a, 1911.

Patented Mar. 26, 1912.

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B. A. DBWALD & A. RosBNsoN.

MECHANICAL MGVBMENT.

APPLICATION FILED .TUNE 3, 1911.

1,020,968. Patented Mar.26,1912.

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UNITED STATES PATENT OFFICE.

EDWARD vA. DEWALD, OF LEETSDALE, AND AARON ROSENSON, OF .AMBRIDGE,PENNSYLVANIA.

. MECHANICAL MOVEMENT.

To all whom t may concern.'

Be it known that we, EDWARD A. DnwALD, a citizen of the United States,and resident of Leetsdale, county of Allegheny, and State ofPennsylvania, and AARON RosENsoN, a citizen of the' United States, and aresident of Ambridge, county of Beaver, and State of Pennsylvania, haveinvented a new and useful Mechanical Movement, of which the following isa specification.

Our invention relates to improvements in mechanical movements, and hasparticular relation to devices for converting motion.

The principal objects of our invention are ;-First. To provide amechanism by means of which an oscillatory motion will be converted intoa continuous rotary motion. Second. To provide mechanism for convertinga reciprocating motion to a continuous rotary motion through anoscillatory motion. Third. To provide mechanism for convertingoscillatory motion provided by a single gear into continuous rotarymotion of a shaft extending in parallelism to the aXis of such gear.

Other objects of the invention are to provide a device of this characterembodying a minimum number of parts so arranged as to occupy acomparatively small space, which is simple and eflicient in operation,durable in construction, practically noiseless, and which can bemanufactured at a relatively low cost.

To these and other ends, the nature of which will be readily understoodas the invention is hereinafter disclosed, our invention consists in theimproved construction and combination of parts hereinafter fullydescribed, illustrated in the accompanying drawings, and particularlypointed out in the appended claims.

In the accompanying drawings in which similar reference charactersindicate similar parts in each of the views,- Figure 1 is a perspectiveview of a device embodying our invention, a portion of the casing beingbroken away for the purpose of showing portions of the operatingmechanism. Fig. 2 is a vertical sectional view taken on the line II ofFig. 3. Fig. 3 is a top plan view of the device with a portion of thetop plate broken away, and showing the operating rod and a tubularcasing therefor in section. Figs. 4 and 5 are sectional views taken onSpecification. of Letters Patent.

Application filed June 3, 1911.

Patented Mar. 26, 1912.

Serial No. 631,045.

he lines IV-IV and V-V respectively of The present invention is intendedto be used as a motion-converting device as a part of mechanism to beemployed for various purposes, the particular purpose not beingessential so 'far as the present invention is concerned. Nor is itparticularly essential to the operation of the device what particulardriving means is employed for providing an oscillatory movement to theoscillating gear, the disclosure herein being that of a spiral, the gearof which is complementally formed to coperate with the spiral in suchmanner that a reciprocating movement of the latter will impart anoscillatory movement to the gear; it will be obvious that any otherdesired means may be provided for imparting the oscillatory movement tosuch gear.

The oscillating gear is designated as 10 and will be referred to as thepower gear. As shown in the drawings, this gear is mounted in a casing,indicated as 11, in which the various operating parts are mounted, saidcasing having its top and bottom walls provided with annular anges 12 inwhich are seated ball-races 13 which serve as antifriction devices forthe gear 10. For the purpose of readily assembling the parts, the top ofthe casing is made removable, being secured to the remainder of thecasing by suitable bolts or equivalent means. As showing one way inwhich theoscillatory movement may be imparted to the gear 10, we show aspiral 14 whichV is adapted to bc reciprocated in any suitable manner,and the gear 10 is formed complementally to the spiral so that thereciprocating motions of the spiral will cause the gear 10 to oscillateon its axis.

15 and 16 designate two (2) spaced-apart shafts extending in parallelismwith the axis of the gear 10, one of which shafts (15) will bedesignated as the oscillatory shaft, while the other (16) will bedesignated the rotary shaft, the latter having its movements continuousin one direction. The latter shaft has its upper end suitably formed forthe purpose of attaching through a shaft or other connection by means ofwhich the rotary motion of the shaft 16 will be communicated to the workto be performed. The shafts 15 and 16 carry the mechanism by means ofwhich the oscillatory motion of the gear 10 is converted into the rotarymotion of the shaft 16. This particular mechanism will now be described.

As shown in Fig. 5, the shaft 15 is provided with two pinions 17 and 18respectively, these pinions being preferably operated by a collar 19,said pinions being of unequal diameter, the pinion 18 having a diametergreater than that of pinion 17, both pinions being preferably keyed orotherwise secured to the shaft in order to move therewith. For thepurpose of retaining the pinion 17 in proper position, we may employ acollar 20 above the pinion and having its upper end in contact with thetop of the casing. The pinion 17 is in constant mesh with the gear 10 soas to be driven thereby in all of its movements. The shaft 16, as shownin Fig. 4, is also provided with pinions 17a and 18a preferablycorresponding in size and vertical position with the pinions 17 and 18,said pinions 17a and 18a, however, being loosely mounted on the shaft16. The pinion 17, like pinion 17, is in constant mesh with the gear 10,but said pinions 17 and 17L are so positioned with respect to each otheras to be free from positive gear connection with each other, beingpositioned to prevent any mesh engagement therebetween. On the contrary,the pinions 18 and 18a are in constant mesh so as to provide a driveengagement therebetween under certain conditions to be named. For thepurpose of positioning the gears 172L and 18, we employ collars 19ZL and20il corresponding to the collars 19 and 20 of the shaft 15.

The pinions 171 and 18a are adapted to be operatively connected to theshaft for the purpose of communicating the motion of these pinions tothe shaft, and we preferably employ the same type of connectingmechanism for each of said pinions. These connections comprisesubstantially three elements, z'. e., a sleeve 21 mounted on the collarltrL or collar 20, as the case may be, each sleeve having its upper edgeprovided with an open-ended recess 22 extending longitudinally thereofadapted to receive a pin 28 projecting radially from the shaft 16, therecess being of a length sufficient to permit a sliding movement of thecollar axially on the collar 192L or 2()a which acts as a bushing. Thelower edge of the sleeve 21 is formed with a succession of cam faces 24,which form shoulders 25 located in the path of movement of a pin 26carried by the pinion 17a or 18a, as the case may be. Said pinsextending parallel to the axis of the pinions. As shown in Fig. 1, thecam faces 24 are arranged similarly in connection with both pinions 17aand 18a, and the construction provides for an engagement of a pin 26with its coperating shoulders 25 when the gear is moved in onedirection,

and an axial sliding movement of the sleeve 21 when the gear rotates inthe opposite direction, t-he pin 26 riding over the cam faces 24.

lVith the parts assembled in this manner, the operation will be asfollows ,-Vith the gear 10 moving in the direction shown by-the arrow inFig. 8, the pinions 17 and 17l will be rotated in the direction of thearrows shown in said figure, both of said pinions being positivelydriven, the pinion 17 causing the shaft 15 to rotate in a similardirection, while the pinion 17L will have its pin 26 engage a shoulder25 of its sleeve 21, causing said pinion 17a to drive the shaft 16 in acorresponding direction. In view of the fact that the pinion 18l isloose on the shaft 16, the'y motion of pinion 18 will cause said pinion18a to move in a direction where its pin 26 will ride over the cam faces24 of its sleeves 21, the movements of the shaft 15 and pinions 17, 18and 18a performing no work, running idle, the shaft 16 being driven fromgear 10 through the pinion 17"L and its connections with the shaft.

Then the movement of the gear 10 is reversed, the movements of pinions17 and 17CL will also be provided, this reversal of movement immediatelychanging the pinion 17a from a working pinion to an idler, due to thefact that this change in direction of rotation of such pinion causes itspin 26 to ride over the cam faces 24 of its sleeve 21, thus operativelydisconnecting this pinion from the shaft 16. At the same time, the

4pinion 18, by reason of its being secured to the shaft 15, acts to movethe pinion 18 in a direction to cause the pin 26 of the latter to engagea shoulder 25 of its sleeve 21, thus causing the shaft 1 6 to be `drivenin the same direction in which it had been moving under the previousdriving action of pinion 17a.

From the above it will be readily seen that when the drive is throughthe pinion 17, both shafts 15 and 16 will rotate in the same direction(counterclockwise when the arrangement of parts is such as shown in thedrawings), while said shafts will rotate in opposite directions when thepower is provided through pinion17, so that while shaft 16 rotatesconstantly in one direct-ion, shaft 15 will oscillate, with itsdirections of movement exactly oppo site to those of the gear 10. Bythis construction we are able to convert the oscillatory motion of asingle gear into a continuous rotary motion of another shaft without theintervention of an additional gear mounted on the mechanism forimparting the oscillatory movement to the power gear or gears, therebyavoiding unnecessary friction and permitting of the formation of amechanism which may be relatively small and occupy but little space,making the structure especially desirable in connection withinstallations where a small and comparatively inconspicuous operation isto be had. Furthermore, the particular arrangement and relationship ofthe parts is such as to provide for a minimum friction, loss of powerand amount of noise, the device as a whole providing an exceedinglylight-running operation; and since the friction is comparatively small,it will be readily understood that the device is durable, not liable toget out of order and can be readily repaired or cleaned when necessary.

Vhile we have herein disclosed a preferred way in which the mechanismmay be provided, it is obvious that changes and modifications thereinVmay be desired or `found necessary under the exigencies of use,

and we desire it understood that we reserve the right to make any andall such changes and modifications as may be found desirable ornecessary in so far as they may follow within the spirit and scope ofthe invention as expressed in the following claims.

Having thus described our invention, what we. claim as new is l. In amechanical movement for converting oscillatory motion to a continuousrotary motion, an oscillatory power gear, a shaft adapted to beconnected to the work, a supplemental shaft, two pinions carried by eachof said shafts, said pinions being correspondingly positioned, onepinion of each shaft being in constant mesh with a pinion of the othershaft, the remaining p-inions being in constant mesh with the power gearand out of mesh with each other, and means on the work shaft foroperatively connecting either of its pinions thereto.

2. In a mechanical movement for converting oscillatory motion toacontinuous rotary motion, an oscillatory power gear, a shaft adapted tobe connected to the work, a supplemental shaft, two pinions carried byeach of said shafts, said pinions being correspondingly positioned, onepinion of each shaft being in constant mesh with a pinion of the othershaft, the remaining pinions being in constant mesh with the power gearand out of mesh with each other, and means on the work shaft foroperatively connecting either of its pinions thereto, said meanscomprising a sleeve carried by `and moving with said work shaft andmovable axially thereon, said sleeve and its pinion having complementalmeans for operatively connecting or disconnecting them togetherdepending upon the direction of movement o-f the pinion.

3. In a mechanical movement for converting oscillatory motion to acontinuous r0- tary motion, an oscillatory power gear, a shaft adaptedto be connected to the work, a supplemental shaft, two pinions carriedby each of said shafts, said pinions being correspondingly positioned,one pinion of each shaft being in constant mesh with a pinion of theother shaft, the remaining pinions being in constant mesh with the powergear and out of mesh with each other, and means on the work shaft foroperatively connecting either of its pinions thereto, said meanscomprising a sleeve carried by' and moving with said work shaft andmovable axially thereon, said sleeve and its pinion having complementalmeans for operatively connecting or disconnecting them togetherdepending upon the direction of movement of the pinion, said lattermeans embodying a pin carried by the pinion and a cam face formed on theend of the sleeve, said face being adapted to form a shoulder in thepath of movement of the pin in one direction.

4. In a mechanical movement, an oscillatory gear, a pair of shaftsexternal of said gear, one of said shafts being adapted to beoperatively connected to the work, pinions carried by said shafts, eachof said shafts having a pinion in constant mesh with said gear and outof mesh with each other, and each shaft also having a pinion in constantmesh with the pinion of the other shaft, the pinions of the work shaftbeing loosely mounted on said shaft, the pinions of the other shaftbeing secured to move in unison with said shaft, each of the pinions ofthe work shaft having a pin extending in parallelism with the shaft axisand projecting laterally from the side thereof, said work shaft havingan independent sleeve for each of its pinions, said sleeves beingmovable axially and each having a cam face on its edge adjacent itspinion, said cam face providing a shoulder in the path of movement ofthe pin when the latter is movable in one direction to drive Athe shaft,the cam faces of said sleeves being arranged in such manner that themovement of said power gear in one direction will cause one ofthepinions of the work shaft to drive said shaft while a movement of saidgear in the opposite direction will cause the other pinion of that shaftto provide the drive operation.

In testimony whereof we aflix our signatures in the presence of twowitnesses.

EDNVARI) A. DEVALD. AARON ROSENSON. lVit-nesses Max I-I. SRoLovrrz, I-I.C. Evniz'r.

Copies of this patent may be obtained for ive cents each, by addressingthe Commissioner of Patents, Washington, D. C.

